Inhaler



(No Model.)

0. WARREN.

INHALER.

No. 298,802. Patented May 20, 1884.

nrrnn slam CHARLES VARREN, OF 'WELLESLEY,

ASSIG-NOR TO JOHN C. \VARREN, OF

BOSTON, MASSACHUSETTS.

INHALER.

EIPECIPICAI'ION forming part of Letters Patent No. 298,802, dated May20, 1884.

Application filed September 518, 1883.

To all whom it may concern Be it known that 1, CHARLES WARREN, ofWellesley, in the county of Norfolk, State of Massachusetts, haveinvented a certain new and useful Improvement in Inhalers, of which thefollowing is a description sufficiently full, clear, and exact to enableany person skilled in the art or science to which said inventionappertains to make and use the same, reference being bad to theaccompanying drawings, forming a part of this specification, in which-Figure ,1 is an isometrical perspective View of my improved inhaler, aportion of the body being represented in section or broken away to showthe interior; Fig. 2, a front elevation; Fig. 3, a rear elevation, andFig. 4 a vertical longitudinal section.

Like letters of reference indicate corresponding parts in the differentfigures of the drawings.

My invention relates to that class of inhalers which are employed foradministering antesthetics in performing surgical operations extractingteeth, 850.; and it consistsin a novel construction and arrangement ofthe parts, as hereinafter more fully set forth and claimed, by which amore effective device of this character is produced than is now inordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation, theextreme simplicity of the invention rendering an elaborate descriptionunnecessary.

In the drawings, A represents the body of the inhaler, and B themouthpiece, which may be composed of metal, hard rubber, or any othersuitable materials. The body is divided into three principalcompartments-to wit, the airtnbe O, ether-tank D, and hot-water tank E.The air-tube opens outwardly into the mouthpiece, and is provided with aforaminousbottom, a, through which the air is inhaled or passed into thetube. The ether-tank D is semicircular in form, being located betweenthe water-tank and air-tube E, and provided with the screw-cap orplugged opening d in its bottom m. The water-tank E is also semicircularin form, being located outside of and partially surrounding thecthertanlgand pro- (No model.)

vided with ascrew-cap or plugged opening, f, in its bottom h, both ofthe tanks D E abutting against the under side of, and being permanentlyclosed by, the mouthpiece B, which serves as a top for each. A valve, G,is provided for closing the openings in the bottom a: of the tube 0,this valve consisting of an annular metallic disk, z, provided with aninwardlyprojecting stud, g, which works freely in a hole in the bottomof the tube, the inner face of the diskbeing packed or covered withleather or chamois-skin to prevent the valve from leaking when shut. Atruss 0r cap, L, is attached to the bottom of the tube 0, the trussbeing provided with a centrally-arranged screw, M, which passes throughthe truss, valve, and bottom 00, in which it freely turns, its innerend, 2;, being upset or headed to pre vent it from being withdrawn. Thisscrew is not provided with threads, except on that portion which passesthrough the valve 1', so that when it is turned in or to the right thevalve will be raised or lifted off its seat and the holes through thebottom w opened, and vice versa, the pin 9 preventing the valve fromrevolving with the screw. A hinged gravitating or pump valve, N, isdisposed on top of the air-tube G, near the mouth-piece, through whichthe breath is exhaled, and the outer rim of the mouth-piece is coveredwith a soft rubber or cloth packing, H, to render it tight at the pointof contact with the face of the patient, thereby preventing the escapeof the vapor. A11 opening, J, leading to the tank D, is formed in thelower side walls of the tube 0, through which the liquid ether passesinto said tank.

In the use of my improvement asponge, K, is inserted in the tube 0, thesponge being of a proper size to closely fit into the tube without beingcompressed to such an extent as to prevent the air from passing readilythrough it, a portion of the sponge preferably extending through theopening J into the chamber'D, to absorb the ether in said chamber. Thetank E is then filled with warm water and the plugs f d and valve iclosed, after which ether is poured into the open mouth of the tube 0,from whence it passes through the sponge into the tank D by way of theopening J. The valve i is then opened by the screw M, and the vaporinhaled in a manner which will be readily obvious without a moreexplicit description.

In filling the inhaler, as described, the sponge become; thoroughlysaturatcd,the surplus fluid passing into the tank D through the hole J,where it is rapidly evaporated by the heat from the water tank E, thevapor passing back through said hole into the tube 0, where it is mixedwith the air which enters through the bottom 00. After the inhaler hasbeen used, the ether is drawn off through the plug or cap (1 and thewater through'the cap or plug f. As

' the breath of the patient is exhaled the sponge checks its passagethrough the tube 0, thus causing it to lift and escape through the valveN, which falls or closes at each inhalation.

I do not confine myself to constructing the valves i N asshown, as anyother valves adapted to perform the same functions may be used instead.Neither do I confine myself to closing the openings in the tanks bymeans of the screw caps or plugs f d, as any suitable means for thatpurpose may be employed; or to filling the tank D through the air-tubeO, as the ether may be introduced through the cap or plug (1; or toclosing one end of the tanks D E with the mouthpiece B, as other meansmay be used, if desired.

The bottoms 00 m h are preferably made in one piece, but may be madeseparately, if desired.

Having thus explained my invention, what I claim is- 1. In an inhalersubstantially such as described, a mouth-piece adapted to fit closelyaround the mouth of the patient, an air-tube adapted to receive and holda sponge, an induction-opening through which fresh air may V enter saidtube when in use, a valve or means for closing said opening as required,an eduction opening through which the breath may be exhaled, a valve ormeans for closing said eduction-opening as the vapor is inhaled, a tankfor holding the liquid ether or other anzesthetic, provided with anopening into said air-tube, and a plugged or capped opening CHARLESWARREN.

Witnesses:

THOMAS LEAVETT, E. W. AnAMs.

